A ritual in which multiple negroes excitedly form a circle and proceed to perform a dance which is synonymous with the hit 2009 hip-hop song "You're a Jerk (I know)" by the New Boyz. Said dance called "the jerk" is performed at many parties and gatherings and street corners where the ratio of negroes to white men is greater than 4:1.

Regee: "Ay mayne you hittin' up dat circle jerk 2nite.

Winston: "I sincerely apologize, but I must decline for I am a caucasian male."

there are many definitions of circle jerk, but one of the unknown ones is that a circle jerk is a man who finds a group of lesbians at a party or club, and watches them freak, and the guy jacks off and gets horny. (my friend told me about this one.)